1. Riya scored x marks in Mathematics, y marks in English and z marks in General Science. The sum of her marks in English and General Science is 18 more than in Mathematics. Express his information algebraically.

2. A man had 260 watches. He sells x watches every day. Write an Algebraic expression to show that number of watches he would be left after t weeks.

Dear Student,

Please find below the solution to the asked query:

1 ) Given : Riya scored x marks in Mathematics, y marks in English and z marks in General Science.

So , The sum of her marks in English and General Science  = y + z

Also given : The sum of her marks in English and General Science is 18 more than in Mathematics. So

y  + z  =  x  + 18  ,

y  + z  -  x  = 18                                                                     ( Ans )

2 ) A man had 260 watches. He sells x watches every day.

And after t weeks ( 7t days , We know 1 week = 7 days ) total number of watches sold  = x ( 7t ) = 7 xt 

Therefore,

After ' t '  weeks , total number of  watches he would be left = 260 - 7 xt                                       ( Ans )


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